<div class="doc-item" id="doc-609"><h2 class="doc-item-name">assoc<span class="namespace">(clojure.core)</span></h2><ul class="var-arglists"><li>(<span class="var-name">assoc</span> map key val)</li><li>(<span class="var-name">assoc</span> map key val &amp; kvs)</li></ul><div class="var-docstring"><p>assoc[iate]. When applied to a map, returns a new map of the
    same (hashed/sorted) type, that contains the mapping of key(s) to
    val(s). When applied to a vector, returns a new vector that
    contains val at index. Note - index must be &lt;= (count vector).</p></div><div class="var-source"><pre>; clojure/core.clj:142
(def
 assoc
 (fn assoc
   ([map key val] (. clojure.lang.RT (assoc map key val)))
   ([map key val &amp; kvs]
    (let [ret (assoc map key val)]
      (if kvs
        (recur ret (first kvs) (second kvs) (nnext kvs))
        ret)))))</pre></div><div class="license"><p>Copyright (c) Rich Hickey. All rights reserved.</p><p>The use and distribution terms for this software are covered by the <a href="http://opensource.org/licenses/eclipse-1.0.php">Eclipse Public License 1.0</a>, which can be found in the file
          epl-v10.html at the root of this distribution. By using this software
          in any fashion, you are agreeing to be bound by the terms of this
          license. You must not remove this notice, or any other, from this
          software.</p></div></div>